Telescopic extension for a vacuum cleaner
First Claim
1. A telescopic handle extension for a vacuum cleaner comprising:
- an external tube having a longitudinal axis;
an internal tube situated in selective sliding relation to the external tube, an exterior surface of the internal tube having a plurality of notches provided thereon, the notches being spaced apart in a direction parallel to the longitudinal axis;
a sleeve at least partially retained between the external tube and the internal tube;
a constraining element, the constraining element including;
a distal end configured to mate with the notches provided on the internal tube;
a proximal end which is pivotally engaged by the sleeve; and
a plate intermediate the distal and proximal ends of the constraining element; and
a manually operated actuator element, the actuator element having a thrust wall which is resiliently biased against at least a portion of a surface of the plate of the constraining element to force the distal end of the constraining element into a desired one of the plurality of notches and thereby prevent movement of the constraining element along the longitudinal axis, wherein the application of force to the actuator element in a direction parallel to the longitudinal axis to overcome the resilient biasing causes the actuator element to disengage the constraining element whereby the distal end of the constraining element is free to exit the one of the plurality of notches with which it has been mated, and thereby permitting the application of force to the internal tube to cause the internal tube to slide along the longitudinal axis for facilitating alignment of the distal end of the constraining element with a selected one of the plurality of notches.
1 Assignment
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Accused Products
Abstract
The invention relates a telescopic extension for a vacuum cleaner comprising an internal tube, an external tube, and a sleeve, wherein the internal tube is provided with a row of notches suitable for receiving a constraining element. According to an aspect of the invention said constraining element is provided with an appendix, preferably constituted by at least one small plate, with which an element of thrust is capable of coming into contact at least along a line running substantially in the direction of movement of said element of thrust, and advantageously over the entire surface of a portion of said small plate. According to an other aspect of the invention said sleeve comprises at least one first tubular casing and one second tubular casing fitted over said first tubular casing; said first tubular casing is provided with snap-on connecting means by means it is connected to the external wall of said external tube; said constraining element is movably supported by said first tubular casing and a manual operating means of said constraining element is slidingly supported by said first and second tubular casing.
57 Citations
29 Claims
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1. A telescopic handle extension for a vacuum cleaner comprising:
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an external tube having a longitudinal axis; an internal tube situated in selective sliding relation to the external tube, an exterior surface of the internal tube having a plurality of notches provided thereon, the notches being spaced apart in a direction parallel to the longitudinal axis; a sleeve at least partially retained between the external tube and the internal tube; a constraining element, the constraining element including; a distal end configured to mate with the notches provided on the internal tube; a proximal end which is pivotally engaged by the sleeve; and a plate intermediate the distal and proximal ends of the constraining element; and a manually operated actuator element, the actuator element having a thrust wall which is resiliently biased against at least a portion of a surface of the plate of the constraining element to force the distal end of the constraining element into a desired one of the plurality of notches and thereby prevent movement of the constraining element along the longitudinal axis, wherein the application of force to the actuator element in a direction parallel to the longitudinal axis to overcome the resilient biasing causes the actuator element to disengage the constraining element whereby the distal end of the constraining element is free to exit the one of the plurality of notches with which it has been mated, and thereby permitting the application of force to the internal tube to cause the internal tube to slide along the longitudinal axis for facilitating alignment of the distal end of the constraining element with a selected one of the plurality of notches. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A telescopic handle extension for a vacuum cleaner comprising:
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an external tube having a longitudinal axis and an external wall; an internal tube situated in selective sliding relation to the external tube, an exterior surface of the internal tube having a plurality of notches provided thereon, the notches being spaced apart in a direction parallel to the longitudinal axis; a sleeve mounted on the external wall of the external tube, the sleeve comprising; at least one first tubular casing; at least one second tubular casing, the second tubular casing fitted over the first tubular casing; and means for connecting the first tubular casing to an external wall of the external tube; a constraining element configured to mate with the notches provided on the internal tube; and a manually operated actuator element, the actuator element being resiliently biased against the constraining element to force the constraining element into a desired one of the plurality of notches and thereby prevent movement of the constraining element along the longitudinal axis, wherein the application of force to the actuator element in a direction parallel to the longitudinal axis to overcome the resilient biasing causes the actuator element to disengage the constraining element whereby the constraining element is free to exit the one of the plurality of notches with which it has been mated, so that the internal tube is free to slide inside the external tube for facilitating alignment of the constraining element with a selected one of the plurality of notches. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification